What kind of things can be done with a LabJack?

Read the output of sensors which measure voltage, current, power, temperature, humidity, wind speed, force, pressure, strain, acceleration, RPM, light intensity, sound intensity, gas concentration, position, and many more. A LabJack brings this data into a PC where it can be stored and processed as desired.

Control things like motors, lights, solenoids, relays, valves, and more.

You are probably going to want the U3 or U6, and you will probably use a timer in 32-bit period measurement mode. There is really no minimum Hz limit. If the signal was too slow, you could always switch to software timing to go as long as you want. The 32-bit period measurement mode will certainly work for your 0.5 - 30 Hz range.

I searched around and did not find any other mention of SpectraPlus software. If the software has an open API that lets you call functions from a Windows DLL then you should be able to talk to a LabJack yourself, otherwise PHS would have to add the support.

Hello,
Sorry for the amature question..
I am building a small system that would read analog signal from two potentiometers (1-5 v- can be changed..), compare the difference between them and as a result provide current to power a motor (6v).
I need 15 individual systems such as that controlled in parallel.
I don't need high speed acquisition, 20 hz are fine.
Are your controllers good for my project. If so, please recommend the right one.
Thanks, Ofer

Reading a couple pots is pretty straightforward. A U3-HV is probably what you should look at. As for controlling the motor, unless the motor is very small you need something between the U3 and the motor. Perhaps you use a PWM output timer on the U3 to control the duty cycle of some sort of switch (transister, SSR, etc.), or perhaps you use an analog output on the U3 to control a motor controller or motor driver. Try searching at labjack.comhttp://labjack.com/search using the term "motor control", and beyond that to get into more detail I suggest posting on our forum.

Then you want to work on what you are going to use to turn the motor on/off (3-phase relay or some sort of motor controller?) and selecting voltage and current sensors. To get into more detail, post on the forums.

So the U6 will measure the signal from some light sensor, and then your software will perhaps use Windows API calls to adjust the brightness of the monitor? The latter is not related to LabJack. For the former, start a forum topic with a link to details about your light sensor.

The things to consider are whether the signals can be measured by the U3 and how fast they need to be acquired. I suggest using the forum to go in to more detail.

What sort of signal do you get from the sensors? Voltage signal? Max and min voltage?

The max sampling rate of the U3 is 50 ksamples/second. That means you can scan 4 channels at 12.5 kscans/second. At that scan rate you acquire frequencies up to 6.25 kHz, but anything higher than that will alias and appear as a lower frequency.

I would first recommend that you get started by opening our LabVIEW example programs to see how each of our provided VI blocks is used. We have many provided VI's that let you open, configure, and control our devices. Once you install the driver you should be able to open the VI's and they should run. Just in case you are having trouble finding our LabVIEW page:

Once you have become comfortable with our device I would recommend using the google custom search bar on our site to look for more specifics on controlling servo motors with our devices. We have many forum posts regarding stepper motor use with our devices:

It looks like the TE-0105 is a dimmer for low-voltage halogen lights. Sounds like you want to control the dimmer by computer, so are wondering if the LabJack an go between the computer and dimmer to provide the interface.

We need more details about how the dimmer is controlled. In Tridonic's "Transformers Overview" document, I see quick mention that communication with the dimmer is "switchDIM, DSI, DALI, or 1-10V switches". Does the TE-0105 support 1 of these or all of these? We need more details about these communication options.

I found more information on these interfaces: switchDIM, DSI, and DALI are all digital interfaces of sorts. It might be possible to do switchDIM by using the LabJack to control a little SSR, but we would need more detail about switchDIM. As for DSI and DALI, they use manchester encoded asynchronous communiction, and we do not support manchester encoding.

Wiki does have an entry for 0-10 V lighting control. This is a simple 0-10 or 1-10 VDC analog signal that controls light from 0 to 100%. That can be done by using an LJTick-DAC with a U3/U6/UE9/T7. The only question is whether the "0-10 V lighting control" described on Wikipedia is the same as the "1-10V switches" mentioned by Tridonic?

I currently have a labjack U3-HV and a CB15 with DAQ Factory software. I would like some help on how I could control up to four 24VDC solenoid valves for a test rig I am working on. Is this possible with this set up?

I will need to turn them on/off and control them to a required cycle sequence, alternating between the solenoids and at times having some of them on at the same time.

Any help would be appreciated to get me started and onto the right track please.

In terms of hardware, the U3 will control some sort of switch that is rated for 24 volts and the max current of you solenoid. Among other options, that switch could be the LJTick-RelayDriver, PS12DC, RB12 with modules, or a stand-alone SSR. Of course, you will need a 24 volt power supply also. For further help I suggest you start a forum topic and provide more details about the solenoid. Do your initial hardware testing using the test panel in LJControlPanel.

As for how to make DAQFactory do the sequence you want, I suggest you post on AzeoTech's forum.